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30131915452 = 2225432962241
BaseRepresentation
bin11100000100000000…
…001000101010111100
32212202221111220100121
4130010000020222330
5443202232243302
621501543304324
72114461025002
oct340400105274
985687456317
1030131915452
1111862754071
125a0b14b0a4
132ac2801692
14165bb86a72
15bb54d4e37
hex704008abc

30131915452 has 12 divisors (see below), whose sum is σ = 52751605536. Its totient is φ = 15060028160.

The previous prime is 30131915423. The next prime is 30131915461. The reversal of 30131915452 is 25451913103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1470949 + ... + 1491292.

It is an arithmetic number, because the mean of its divisors is an integer number (4395967128).

Almost surely, 230131915452 is an apocalyptic number.

It is an amenable number.

30131915452 is a deficient number, since it is larger than the sum of its proper divisors (22619690084).

30131915452 is a wasteful number, since it uses less digits than its factorization.

30131915452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2964788 (or 2964786 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 34.

The spelling of 30131915452 in words is "thirty billion, one hundred thirty-one million, nine hundred fifteen thousand, four hundred fifty-two".

Divisors: 1 2 4 2543 5086 10172 2962241 5924482 11848964 7532978863 15065957726 30131915452